Clean some coffee cans out, and cut a slit in their lids.
Place a label on the front of the coffee can and write the name of the charity you want to support on the front.
Hand the coffee cans out to family members, friends, teachers, or anyone else you can think of who would be willing to save their soda can tabs. Give each person the date that you plan on collecting the cans.
Pull the tabs off of each soda can that you come across. Simply rotate the tab a few times and lift it up and down repeatedly until it breaks loose.
Slide the tabs in the slit at the top of the coffee can.
Collect all of the cans and turn them over to your charity.